JP3048572U - Bolt temporary fastener - Google Patents

Abstract

(57) [Summary] [Problem] A nut, a spring washer, and a tip of a threaded portion of a bolt inserted into a beam support for a frame and a beam constituting a frame.
It is an object of the present invention to provide a temporary bolt tightener that can carry out temporary tightening of a bolt simply by carrying a temporary bolt tightener on which a flat washer is set and rotating the temporary tightener in a horizontal direction. SOLUTION: A temporary bolt fastener 1 is a temporary fastener for temporarily tightening a bolt 54 and a nut 55, has a cylindrical appearance, and has a nut 55 previously placed at a predetermined deepest position inside. The nut insertion groove 2 is formed in a regular hexagonal column shape, and a spring washer insertion groove 3 for mounting a spring washer is formed in a cylindrical shape at a predetermined concentric depth position above the nut insertion groove 2. At a position, a flat washer insertion groove 4 for mounting the flat washer is formed in a cylindrical shape having a diameter larger than that of the spring washer insertion groove 3.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a temporary fastener which sets a nut, a spring washer, and a flat washer in advance, and fastens a nut to a screw portion of a bolt.

[0002]

[Prior art]

 Conventionally, floors of telephone offices and the like have double floors in order to provide spaces for drawing in these wiring cables because wiring cables consisting of hundreds to thousands of lines are connected between exchanges. FIG. 3 is a schematic diagram showing a floor structure of a telephone station or the like having such a double floor structure (hereinafter, a structure exhibiting this structure is simply referred to as a "frame"). The wiring cable (not shown) is routed under the frame. In such a frame structure, as shown in FIG. 3, a gantry 51 as a base structure, an L-shaped gantry beam receiver 52 installed on a side of the gantry 51, and a beam 53 installed on an upper portion. The gantry 51, the gantry beam receiver 52 and the beam 53 are joined by M standard bolts and nuts. That is, in FIG. 3, reference numeral 51 denotes a gantry, 52 denotes an L-shaped gantry support, 53 denotes a beam, 54 denotes a bolt, 55 denotes a nut, 56 denotes a spring washer, and 57 denotes a flat washer. It is.

[0003] That is, at predetermined positions on the upper surface, each side surface, and the bottom surface of the gantry 51, the bolt 54 and the nut 55 are used to fix the gantry beam receiver 52, the beam 53, and the like at a predetermined diameter. A bolt hole of 1 cm to 1.4 cm is provided. On the other hand, a bolt 54 is provided beforehand at a predetermined position of both legs on two sides of the gantry 51 in the upper receiving portion of the gantry beam receiver 52. It is fixed using a nut 55.

[0004] The beam 53 is a U-shaped iron pillar having one side opened, and has a diameter of 1.3 cm on the bottom surface thereof, which is fixed to the gantry beam receiver 52 by using the bolt 54 and the nut 55. Bolt holes are provided. The so-called M-shaped bolt having a diameter of 1 cm and a height of 8 cm is used as the bolt 54 for joining the gantry 51, the gantry beam receiver 52 and the beam 53, and the nut 55 is fitted to the M-bolt. It is a nut to do.

[0005] The bolts 54 and the nuts 55 have the flat washers 57 and the spring washers 56 interposed therebetween in order to increase the tightening strength and reduce loosening.

When using the bolt 54 and the nut 55 as well as the spring washer 56 and the flat washer 57 to join the respective parts of the frame having the above-described configuration, the joints are aligned, and the bolt is inserted into the bolt hole. After that, the worker fixes the head of the bolt 54 with one hand, and holds the nut 55, the spring washer 56, and the flat washer 57 in order from the bottom with the other hand, The screw washer 56 and the flat washer 57 are inserted through the screw portion of the bolt 54, and when the edge of the nut 55 comes into contact with the screw end of the bolt 54, the nut 55 is lightly screwed and temporarily tightened. I do. Then, final fastening work is performed. FIG. 4 is an explanatory view showing a state of the work of performing the temporary fastening. The above-mentioned worker fixes the head of the bolt 54 into which the above-mentioned gantry beam receiver 52 and the beam 53 are inserted with one hand, Holding the nut 55, the spring washer 56, and the flat washer 57 on the other hand in order, insert the tip of the bolt 54 in the order of the flat washer 57, the spring washer 56, and the edge of the nut 55. When the bolt reaches the screw end of the bolt 54, the nut 55 is lightly screwed and temporarily tightened.

[0007]

[Problems to be solved by the invention]

 However, as described above, during the temporary tightening of the bolt 54, the operator fixes the bolt 54 with one hand and inserts three holes, the nut 55, the spring washer 56, and the flat washer 57, into the other hand. Because they must be stacked and held, it is sometimes difficult to temporarily tighten in a recessed or hard-to-reach place, regardless of where the work can be done in an easy position. Also, when it is necessary to carry three nuts 55, a spring washer 56, and a flat washer 57 in one hand and carry them under a beam or the like from the double floor and temporarily tighten the bolts 54, etc. In many cases, the nut 55, the spring washer 56, and the flat washer 57 are dropped. In this case, it is necessary to search for the dropped nut 55, the spring washer 56, and the flat washer 57. There was a problem such as a decrease.

The present invention has been made in view of the above-mentioned conventional circumstances, and sets a nut 55, a spring washer 56, and a flat washer 57 to be tightened in advance in the order of being inserted, and uses a stand for joining the nut 55, the spring washer 56, and the flat washer 57. The bolt is inserted into the beam receiver 52 and the beam 53, or the bolt 54 inserted between the pedestal beam receiver 52 and the beam 53, and then the nut 55, the spring washer 56, The temporary fastening of the washer 57 is simply performed in this order, and the inventor of the present application has come up with a bolt temporary fastener that is easy to set in advance.

[0009]

[Means for Solving the Problems]

 For this reason, the invention according to claim 1 of the present application is a temporary fastening tool for temporarily fastening a bolt and a nut, which has a cylindrical appearance and in which a nut is previously placed at a predetermined deepest position inside. A groove is formed in a regular hexagonal column shape, and a spring washer insertion groove for mounting the spring washer is formed in a cylindrical shape at a predetermined concentric depth position above the groove, and further, a flat is formed at a predetermined concentric predetermined uppermost position. The flat washer insertion groove on which the washer is mounted has a diameter larger than that of the spring washer insertion groove and is formed in a cylindrical shape. The invention according to claim 2 of the present application is characterized in that in the bolt temporary fastener according to claim 1, a large number of non-slip grooves are provided in the cylindrical direction on the outer peripheral surface of the main body of the bolt temporary fastener. .

[0010]

[Embodiment of the invention]

 Hereinafter, the temporary bolt fastener of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of a temporary bolt fastener, FIG. 1A is a side sectional view of the temporary bolt fastener, and FIG. 1B is a top view of the bolt fastener. It is a top view. In FIG. 1, reference numeral 1 denotes a temporary bolt fastener having a cylindrical appearance having a diameter of about 3 cm and a height of about 5 cm, and made of a hard material such as hard plastic. A regular hexagonal column-shaped nut insertion groove 3, which is provided at a predetermined deepest position and on which a nut 55 to be tightened is placed in advance, is provided with a spring washer 56 at a predetermined concentric depth above the nut insertion groove 2. The cylindrical spring washer insertion groove 4 to be placed has a larger diameter than the spring washer insertion groove 3 at a predetermined uppermost position concentric with the spring washer insertion groove 3. A cylindrical flat washer insertion groove 5 on which the flat washer 57 is placed is a bolt insertion hole through which a threaded portion of the bolt 54 is inserted as the nut 55 is screwed, and 6 is a bolt tightening hole. Provided on the outer periphery of the tool 1 Is a non-slip grooves to Riyasuku.

The nut insertion groove 2 is provided at a predetermined deepest position inside the temporary bolt fastener 1. The nut insertion groove 2 is a predetermined large groove into which the nut 55 of a regular hexagonal prism is fitted and inserted / placed with the center A of the temporary bolt fastener 1 as a base point. In the present embodiment, It is a hexagonal groove having a height of slightly more than 1 cm and a maximum width of slightly more than 2 cm, in which an M-type 10 mm nut 55 is inserted without looseness. The nut 55 inserted from the upper part of the bolt temporary fastener 1 is placed on the bottom 2a of the hexagonal nut insertion groove 2 and is locked by the bottom 2a.

After the nut 55 is placed in this manner, the spring washer 56 is placed on the spring washer insertion groove 3 provided above the nut insertion groove 2. The spring washer insertion groove 3 is a predetermined cylindrical groove into which the spring washer 56 is inserted concentrically with the nut insertion groove 2 with a margin in the height direction. The nut 3 is mounted on the bottom 3a and locked by the bottom 3a, and is formed of a cylindrical groove having a diameter slightly larger than that of the nut insertion groove 2. Further, after the nut 55 is placed in the nut insertion groove 2 and the spring washer 56 is placed in the spring washer insertion groove 3, the flat washer 57 is placed in the flat washer insertion groove 4. The flat washer 57 is locked on the bottom 4a. Therefore, the flat washer insertion groove 4 is a predetermined cylindrical groove into which the flat washer 57 is inserted with a margin in the height direction, and is a cylindrical groove having a diameter slightly larger than the spring washer insertion groove 3. Consists of

The bolt insertion hole 5 is a hole groove provided for accommodating the threaded end of the bolt 54 as the nut 55 is screwed, and is provided for accommodating the projected portion. The screw portion of the bolt 54 is provided at a lower portion of the groove 2 and is formed by a cylindrical hole to be inserted with a margin.

The non-slip groove 6 is formed by a plurality of cut grooves of about 0.5 mm provided on the outer peripheral surface of the temporary bolt fastener 1. A plurality of these notches are provided arbitrarily in the height direction of the outer peripheral surface of the temporary bolt fastener 1, and when a worker manually rotates the temporary bolt fastener 1, a predetermined friction is generated and slipping occurs. Not configured.

Next, by using the temporary bolt fastener 1 having the above configuration, a beam 53 is passed between the pedestals 51 to be a frame of a double floor, and a pedestal beam receiver 52 attached to the pedestal 51, A state in which the beam 53 placed on the beam receiver 52 is temporarily fastened with the bolt 54 will be described with reference to the drawings. FIG. 2 is a schematic view showing a state in which the bolt 54 is temporarily tightened using the bolt temporary fastener 1. First, the gantry 51 and the gantry (not shown) are arranged at predetermined positions on the double floor as in the conventional case, and the gantry beam receiver 52 attached to the gantry 51 and the gantry beam receiver attached to the gantry are provided. A beam 53 is passed between (not shown), and a bolt 54 is inserted from above from the beam support 52 for the gantry so as to match the bolt hole provided in the beam 53.

Next, the worker inserts a nut 55 to be temporarily fastened to the bolt 54 from the upper part into the nut insertion groove 2 into the bolt temporary fastener 1, and then, from the upper part, inserts the spring washer 56 into the spring washer insertion groove. 4 and then, from above, the flat washer 57 is inserted into the flat washer insertion groove 4 to complete the preparation for the temporary bolt tightening. At this time, since the nut 55, the spring washer 56, and the flat washer 57 are inserted into the predetermined positions of the bolt temporary fastener 1, the screw hole of the nut 55, the hole of the spring washer 56, and the hole of the flat washer 57 are provided. Are formed concentrically.

When the preparation for the temporary tightening of the bolt is completed, the worker fixes the head of the bolt 54 with one hand while holding the nut 55, the spring washer 56, and the flat washer 57 in the other hand. Hold the fastener 1 and insert the screw portion of the bolt 54 from the top of the temporary bolt fastener 1 to the position of the nut 55. When the tip of the bolt 54 comes into contact with the nut 55, the bolt temporary fastener is rotated in a predetermined direction, and the nut 55 is temporarily tightened to the bolt 54. By repeating this work, the beam 53 is temporarily tightened with the bolts of the gantry beam receiver 52 or the pedestal beam receiver (not shown). When all the temporary tightenings are completed, the balance of the entire frame is balanced. In consideration of the above, the nut 55 is further screwed to complete the double floor frame.

In the above-described embodiment, a plurality of cuts in the height direction are provided on the outer peripheral surface of the temporary bolt fastener to form a non-slip groove. However, a plurality of protrusions may be provided in the height direction to prevent slip. Alternatively, a rubber or the like having high frictional resistance may be wound around the outer peripheral surface of the temporary bolt fastener to prevent slippage. Further, in the above embodiment, the material of the temporary bolt fastener is hard plastic, but the material is not particularly limited and may be metal. In the above-described embodiment, the nut, the flat washer, and the spring washer are set by providing the nut insertion groove, the spring washer insertion groove, and the flat washer insertion groove in the upper direction of the temporary bolt tightening tool. A nut insertion groove, spring washer insertion groove, and flat washer insertion groove may also be provided in the bottom direction of the tool so that the nut, flat washer, and spring washer can be set regardless of the top or bottom. The size of the insertion groove, spring washer insertion groove, and flat washer insertion groove may be changed so that a single bolt temporary fastener can be used to temporarily tighten two types of bolts having different sizes. The outer peripheral surface of the temporary bolt may be colored.

[0019]

[Effect of the invention]

 As described above, according to the temporary bolt fastener of the present invention, a nut, a spring washer, and a flat washer are set in advance on the temporary bolt fastener and the bolt is temporarily tightened. There is no need to stack three flat washers and spring washers, and temporary bolts can be easily tightened even in places where work is difficult, and work efficiency can be improved. Also, since nuts, spring washers, and flat washers are set in advance on the bolt temporary fasteners, the spring washers or flat washers may slip from hands and fall on the floor of the room itself, or may come into contact with the ends of beams or bolts. This prevents accidental dropping and improves the work efficiency in this aspect as well.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a temporary bolt fastener according to the present invention.

FIG. 2 is a schematic view illustrating a state in which a bolt is temporarily tightened using the temporary bolt tightening tool of the present invention.

FIG. 3 is a schematic diagram showing the structure of a double floor (part).

FIG. 4 is an explanatory view showing a state of a conventional work of performing temporary fastening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bolt temporary fastening tool, 2 ... Nut insertion groove, 3 ... Spring washer insertion groove, 4 ... Flat washer insertion groove, 5 ... Bolt insertion hole, 6 ... Non-slip groove , 51 ... stand, 52 ... stand for beam, 53 ... beam, 54 ... bolt, 55 ... nut, 56 ... spring washer, 57 ... flat washer,

Claims (2)

[Utility model registration claims] 1. A temporary fastener for temporarily tightening a bolt and a nut, which has a cylindrical appearance, and has a regular hexagonal column-shaped nut insertion groove for mounting a nut in advance at a predetermined deepest position inside. A spring washer insertion groove for mounting a spring washer is formed in a cylindrical shape at a predetermined concentric depth position above the flat washer, and a flat washer for mounting a flat washer is mounted at a predetermined uppermost position concentrically. A temporary bolt fastener, wherein the insertion groove has a larger diameter than the spring washer insertion groove and is formed in a cylindrical shape. 2. The temporary bolt fastener according to claim 1, wherein the temporary bolt fastener has a plurality of non-slip grooves in a cylindrical direction on an outer peripheral surface of a main body of the temporary bolt fastener.